Mercurial > hg > dmlib
diff tools/mod2wav.c @ 1953:c3e88d9343ca
Move WAV stuff back into mod2wav.c, made no sense to have it elsewhere.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Sat, 30 Jun 2018 02:27:52 +0300 |
parents | 93d1050eac99 |
children | e3f0eaf23f4f |
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--- a/tools/mod2wav.c Sat Jun 30 00:46:46 2018 +0300 +++ b/tools/mod2wav.c Sat Jun 30 02:27:52 2018 +0300 @@ -14,10 +14,44 @@ #include "jssplr.h" #include "dmlib.h" #include "dmargs.h" -#include "dmwav.h" +#include "dmfile.h" #include "dmmutex.h" +#define DM_WAVE_FORMAT_PCM (1) +#define DM_WAVE_RIFF_ID "RIFF" +#define DM_WAVE_WAVE_ID "WAVE" +#define DM_WAVE_FMT_ID "fmt " +#define DM_WAVE_DATA_ID "data" + + +typedef struct +{ + Uint8 chunkID[4]; + Uint32 chunkSize; +} DMWaveChunk; + + +typedef struct +{ + Uint8 riffID[4]; + Uint32 fileSize; + Uint8 riffType[4]; + + DMWaveChunk chFormat; + + Uint16 wFormatTag; + Uint16 nChannels; + Uint32 nSamplesPerSec; + Uint32 nAvgBytesPerSec; + Uint16 nBlockAlign; + Uint16 wBitsPerSample; + + DMWaveChunk chData; + // Data follows here +} DMWaveFile; + + char *optInFilename = NULL, *optOutFilename = NULL; int optOutFormat = JSS_AUDIO_S16, optOutChannels = 2, @@ -123,6 +157,57 @@ } +BOOL dmWriteWAVChunk(FILE * f, DMWaveChunk *ch) +{ + return dm_fwrite_str(f, ch->chunkID, 4) && dm_fwrite_le32(f, ch->chunkSize); +} + + +void dmMakeWAVChunk(DMWaveChunk *ch, const char *chunkID, const Uint32 chunkSize) +{ + memcpy(&(ch->chunkID), (const void *) chunkID, 4); + ch->chunkSize = chunkSize; +} + + +void dmWriteWAVHeader(FILE *outFile, int sampBits, int sampFreq, int sampChn, size_t sampLen) +{ + DMWaveFile wav; + + // PCM WAVE chunk + dmMakeWAVChunk(&wav.chFormat, DM_WAVE_FMT_ID, (2 + 2 + 4 + 4 + 2 + 2)); + + wav.wFormatTag = DM_WAVE_FORMAT_PCM; + wav.nChannels = sampChn; + wav.nSamplesPerSec = sampFreq; + wav.nAvgBytesPerSec = (sampBits * sampChn * sampFreq) / 8; + wav.nBlockAlign = (sampBits * sampChn) / 8; + wav.wBitsPerSample = sampBits; + + // Data chunk + dmMakeWAVChunk(&wav.chData, DM_WAVE_DATA_ID, (sampLen * wav.nBlockAlign)); + + // RIFF header + memcpy(&wav.riffID, (const void *) DM_WAVE_RIFF_ID, 4); + memcpy(&wav.riffType, (const void *) DM_WAVE_WAVE_ID, 4); + wav.fileSize = ((4 + 4 + 4) + wav.chFormat.chunkSize + wav.chData.chunkSize); + + // Write header + dm_fwrite_str(outFile, wav.riffID, sizeof(wav.riffID)); + dm_fwrite_le32(outFile, wav.fileSize); + + dm_fwrite_str(outFile, wav.riffType, sizeof(wav.riffType)); + dmWriteWAVChunk(outFile, &wav.chFormat); + + dm_fwrite_le16(outFile, wav.wFormatTag); + dm_fwrite_le16(outFile, wav.nChannels); + dm_fwrite_le32(outFile, wav.nSamplesPerSec); + dm_fwrite_le32(outFile, wav.nAvgBytesPerSec); + dm_fwrite_le16(outFile, wav.nBlockAlign); + dm_fwrite_le16(outFile, wav.wBitsPerSample); + + dmWriteWAVChunk(outFile, &wav.chData); +} int main(int argc, char *argv[]) { DMResource *inFile = NULL;